not much... about 2$
It appears that the first 2 Franc coin issued by Switzerland (HELVETIA" is the Latin name for Switzerland) was minted in 1850.
Which Francs do you mean? 100 French Franc= no longer in use, maybe around $100100 Swiss francs =$82
70.050.100.200.501.-2.-5.-There also exist 0.01 and 0.02 but they are no longer in use.
You can; 1) Buy cash and hold it - you will receive no interest 2) open a Swiss Franc account and buy and deposit there. You will receive interets, but it is virtually 0% (see 1)
The coin you are referring to is from Switzerland ("Confoederatio Helvetica" is Latin for "Swiss Confederation"), you haven't identified the denomination or the condition of the coin. Switzerland produced coins for 1, 2, 5, 10 and 20 Rappen in 1938, but not the usual 1/2 Franc, Franc, 2 Franc and 5 Franc coins (although very valuable patterns of the 1 and 2 Franc coins were produced). Depending on denomination and condition of your coin, it could be worth between a few cents and perhaps $20.
"Confoederatio Helvetica" is the Latin name for Switzerland (because Swiss citizens speak 4 different languages, they use Latin on the coins so as to be fair to everyone), but without knowing the denomination (value) of the coin it's like asking "how much is a 1929 U.S.A. ?". If the number on the reverse (back) is followed by 'Fr.' then it is a 1-Franc, half-Franc, or 2-Franc. These are all 0.835 *real silver* (i.e. 83.5% silver) - the 1 Franc has 0.1342 of an ounce of silver in it (the 2-Franc has twice as much, a half-Franc, half as much - simple !). To find out how much an ounce of silver is worth right now, try looking at www.kitco.com or www.24hgold.com. Then use a calculator. If the number on the reverse has no letters after it, it's basically a number of 'cents' (called a 'Rappen' in German, 'centime' in French, 'centesimo' in Italian, or 'rap' in Romansh). You probably couldn't sell it unless it's totally unscratched and shiny ('brilliant uncirculated', or BU) - but if it is, look it up on the related link.
It's a common date, worth about $2 for its silver content.
The year on the Swiss Franc coin says nothing about the value but about the date when the coin was fabricated. Check out the number on the coin to see how much it's worth. You have the smallest piece (5 Rappen) going up to pieces of 10, 20 and 50 Rappen (100 Rappen = 1 Franc) , 1, 2 and 5 Swiss Franc coins.
Doctor Who - 1963 Silver Nemesis Part 2 25-9 is rated/received certificates of: Australia:G
15 grams. 40 percent silver.
You need to be more specific. Please post a new question with the coins' dates. In the case of the francs, are they French, Swiss, or Belgian?